A bench headed by NGT Chairperson Swatanter Kumar sought response of CPCB on the application by February 15, the next date of hearing.
The application was filed by the Society for Protection of Environment and Biodiversity in a pending petition which has challenged the Ministry of Environment and Forests' (MoEF) recent notification exempting real estate projects from obtaining prior environmental clearance.
It said this move "will further deteriorate the natural environment and ecology".
As per CPCB's circular, all projects requiring environment clearance are exempted from 'consent to establish' and they can directly be granted 'consent to operate' subject to environment clearance granted by the State Level Environment Impact Assessment Authority (SEIAA) and MoEF.
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"Respondent number 3 (CPCB) by way of an executive order is violating the provisions of the two important environment legislations of the country which is bad in law pursuance to the EIA amendment notification dated December 9, 2016.
"It is also pertinent to mention that procedure of issuance of the 'consent to establish' also requires physical inspection by the officer of SPCB to ensure the compliance by the industries. That doing away with requirement of 'consent to establish' will be disastrous for environment," it said.
In the petition relating to MoEF's notification, the bench had earlier refused to stay the December 9, 2016 notification but had restrained it from granting any fresh permission under the new regulations.
MoEF's amended notification exempts building and construction projects of all sizes from the process of EIA and prior environmental clearance before beginning construction.
For smaller projects (less than 20,000 square metres), the amended notification even has a "self-declaration" clause, which will ensure issuance of permission from urban local bodies.